ABC News(GUATEMALA CITY) -- Two ambulances have arrived at the detention center in Guatemala City where software millionaire John McAfee is being held after McAfee suffered a possible heart attack.

McAfee, 67 -- who may soon be deported back to Belize, where authorities want to question him about the shooting death of his neighbor -- was reportedly prostrate on the floor of his cell and unresponsive. Medics were treating him.

Earlier Thursday, McAfee had complained of chest pains.

McAfee was scheduled to be deported to Belize Thursday morning, ABC News has learned. But a judge could stay the ruling if it is determined that McAfee's life is threatened by being in Belizean custody, as McAfee has claimed in the past several weeks.

Raphael Martinez, a spokesman for the Belize government, said that if McAfee is deported to Belize, he would immediately be handed over to police and detained for up to 48 hours unless charges are brought against him.

"There is more that we know about the investigation, but that remains part of the police work," he said, hinting at possible charges.

He added that a handover by Guatemala would be "the neighborly thing to do."

A spokesman for the U.S. embassy in Guatemala said that "due to privacy considerations," the embassy would "have no comment on the specifics of this situation," but that, "U.S. citizens are subject to the laws of the countries in which they are traveling or residing, and must work within the host countries' legal framework."

Just hours before McAfee's arrest, he told ABC News in an exclusive interview Wednesday he would be seeking asylum in Guatemala. McAfee was arrested by the Central American country's immigration police and not the national police, said his attorney, who was confident his client would be released within hours.

McAfee has been on the run from police in Belize since the Nov. 10 murder of his neighbor, fellow American expatriate Greg Faull.

During his three-week journey, said McAfee, he disguised himself as handicapped, dyed his hair seven times and hid in many different places.

He dismissed accounts of erratic behavior and reports that he had been using the synthetic drug bath salts. He said he had never used the drug, and said statements that he had were part of an elaborate prank.

Investigators said that McAfee was not a suspect in the death of the former developer, who was found shot in the head in his house on the resort island of San Pedro, but that they wanted to question him.